Whenever you are asked to launch a GUI application from terminal, you should look the appropriate .desktop file for Exec menu. This depends on the DE you're using, most likely you can right-click on the app in application menu and then chose "Edit Application..." or something.
I think you should reboot your PC once and then try again. If it opens from terminal it should also open from desktop icon too. I'm not using XFCE, so not sure much about how it handles.
i rebooted several times - because there is also linux-lts 510.x not working but linux amd 5.12.10 is working fine. I just compiled the kernel 5.12.11 and will reboot soon and report you.
I do not know how to change this into that this looks like this - and when i think so close when i would not have new hardware i very fast had installed my long years used Distro linux Mint where all works.
But sadly i had to change my favorite Distro due to hardware changes and i have been using Garuda XFCE since march and i was quiet happy with it until there was the issue starting with problems with pamac, now boot options do not work and now i am blamed that it is my fault...... just by the fact i found a workaround for pamac in manjaro forum.
And yes Manjaro i tried also some years ago it had terrible problems after each update so that i banned it.
I hoped that Garuda is a bit more stable when it comes to an update.
pamac i could fix already this was realy my fault probaly but it was easy to fix. I ask more about this " boot option tool " which works when i call it from command line but not when i call it in menue.
Yes it is stable and yes i was realy exited i use it in the begin of march with almost zero issues.
Just now there was a problem with pamac and this i found just out by the fact that i did not recieve updates what wondered me. Because i was used to it that pamac apears with his blue bubble as every day almost.
I see this incident as very critical because security updates are very important nowdays.
Pamac is not a Garuda project. Garuda has no control over how well third party software works with Garuda. Pacman is the official Arch installer. To use any Arch based distribution you must be capable of merging pacnew files when required.
If you are not up to this, then perhaps you should use a distro where this type of system maintenance is not required. To use an Arch based distribution you must be willing to learn how to perform basic maintenance tasks.
I would propose eliminating Pamac altogether. Of course, then you would need to have quite a few packages added to accomplish some of the setup scripts, and you would have to eliminate others.
You could have Yay or Paru or whatever installed, and the few commands necessary to search, install and update packages could be Pinned to the forum start page and in a startup dialogue.
Or you can go with Octopi, since Dragonized is the overwhelmingly favorite download on SourceForge, and spend some time decorating it for GTK environments.
Anything but Pamac which has never stopped having difficulties since it was first coded.